Define multiple configuration files. In each configuration file, specify the JpaVendorAdapter, datasource, enityManager, entityManagerFactory, and transactionManager. You can set a default configuration file and multiple other configuration files.

Add a property to the test case, then reference it in request as ${#TestCase#propertyName} (Note: TestCase is the scope, write it as it, just replace propertyName with the name of the property you defined)